Project #4937 - Statistics for Business

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A credit rating agency assigns ratings to corporate bonds. The agency rates bonds to companies that are most likely to honor their liabilities AAA. The ratings fall as the company becomes more likely to default, dropping from AAA to AA, A, down to BBB, BB, B, CCC, CC, R, and then D (for default). Let the event W={AAA, AA, A, BBB, BB, B} AND V = {BBB, BB, B, CCC, CC}.